7650A
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Catalog excerpts

7650A High Temperature, Low Strain, Extended Performance Capacitive Extensometers (1200 °C or 1600 °C) This high precision extensometer measures axial strains on specimens at temperatures up to 1600 °C (2900 °F). Compatible with materials testing furnaces or induction heating. May be used for strain-controlled, high frequency fatigue tests. Slide mounting system enables mounting to hot specimens in seconds. Model 7650A extensometer with rigid load frame mounting Model DT6229 single-channel signal conditioner provides analog and digital outputs Model 7650A extensometers measure strains with extremely high precision due to their design features and low strain range. All models are capable of tension and compression Model 7650A axial extensometer strain measurement, and may be used for fatigue testing under fully reversed load and strain conditions at frequencies up to 10 Hz. All 7650A models mount rigidly on the load frame and incorporate slide mounting to bring the extensometer into contact with the specimen. The gauge length is set automatically before mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached. These units are specifically designed to provide high accuracy, high resolution measurements and perform high temperature fatigue testing at the highest possible frequencies. They incorporate capacitive sensors for low operating force and include electronics with programmable filtering and multi-point linearization for improved performance and accuracy. The overall design minimizes, and in many cases virtually eliminates, any influence from common lab environment vibrations. These water-cooled extensometers are equipped with high purity alumina rods for specimen contact when testing to 1200 °C (2200 °F). Silicon carbide rods are used for the 1600 °C (2900 °F) high temperature option. The Model 7650A is often customized for specific test needs. Contact Epsilon for a configuration that matches your requirement. Visit our website at www.epsilontec

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Ordering Information May be left on through specimen failure. S elf-setting gauge length with fine adjustment feature. models can measure in both tension and compression and may be used for cyclic testing at test frequencies up to 10 Hz. units meet ASTM class B-1 requirements for accuracy. A test certificate is included. ISO 9513 class 0,5 test certificates are available upon request. fully calibrated with calibration that is traceable to NPL; voltage output may be user-specified (typically 0-10V). E xcellent ambient vibration rejection; primary vibration mode >100 Hz typical. Ceramic rod...

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